双语趣听精彩世界 第44期:普通货架上买的鸡蛋,为何回家要冷藏?

 　　雅虎新闻：为什么欧洲超市里的鸡蛋只放在普通货架上，而美国的鸡蛋则需要放在冷藏区？

　　鸡蛋为什么要冷藏

　　Yahoo.com: Why is it that European eggs are stored on supermarket shelves while American eggs chill in the cold section?

　　The difference, experts say, has to do with the egg production process.

　　Unlike European eggs, American eggs are washed and sprayed with a sanitizer immediately after collection, then placed into a cooler. Bringing the eggs back to room temperature would increase the chance of bacterial¹ growth, that's according to the USDA's egg grading manual.

1 bacterial   

a.细菌的

参考例句：

• Bacterial reproduction is accelerated in weightless space. 在失重的空间，细菌繁殖加快了。
• Brain lesions can be caused by bacterial infections. 大脑损伤可能由细菌感染引起。